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<p>Decimator Config.  
 <a href="struct_x_dfe_prach___d_d_c_cfg.html#details">More...</a></p>
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Data Fields</h2></td></tr>
<tr class="memitem:a31fbe2e7f11a937712811abe5a3ccead"><td class="memItemLeft" align="right" valign="top">u32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_x_dfe_prach___d_d_c_cfg.html#a31fbe2e7f11a937712811abe5a3ccead">DecimationRate</a></td></tr>
<tr class="memdesc:a31fbe2e7f11a937712811abe5a3ccead"><td class="mdescLeft">&#160;</td><td class="mdescRight"><pre class="fragment">     [0,1,2,3,4,8,9,10,11] Decimation Rate required
</pre><p> to go from 30.72MS/s to the RACH sample rate:  <a href="#a31fbe2e7f11a937712811abe5a3ccead">More...</a><br/></td></tr>
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<tr class="memitem:a268502d023b8035641d1e249d6fc47da"><td class="memItemLeft" align="right" valign="top">u32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_x_dfe_prach___d_d_c_cfg.html#a268502d023b8035641d1e249d6fc47da">UserSCS</a></td></tr>
<tr class="memdesc:a268502d023b8035641d1e249d6fc47da"><td class="mdescLeft">&#160;</td><td class="mdescRight">[0-4,12-15] SubCarrier spacing of the RACH transmission this DDC is decimating and set by user.  <a href="#a268502d023b8035641d1e249d6fc47da">More...</a><br/></td></tr>
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<tr class="memitem:a4e499964f3e24f9b83964affc737e1d9"><td class="memItemLeft" align="right" valign="top">u32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_x_dfe_prach___d_d_c_cfg.html#a4e499964f3e24f9b83964affc737e1d9">RachGain</a> [6]</td></tr>
<tr class="memdesc:a4e499964f3e24f9b83964affc737e1d9"><td class="mdescLeft">&#160;</td><td class="mdescRight">[0-3] The array of [6] Decimation Gains.  <a href="#a4e499964f3e24f9b83964affc737e1d9">More...</a><br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Decimator Config. </p>
</div><h2 class="groupheader">Field Documentation</h2>
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<p><pre class="fragment">     [0,1,2,3,4,8,9,10,11] Decimation Rate required
</pre><p> to go from 30.72MS/s to the RACH sample rate: </p>
<ul>
<li>0: 1x decimation(not allowed when XDfePrach_CarrierCfg.CCRate==0)</li>
<li>1: 2x decimation</li>
<li>2: 4x decimation</li>
<li>3: 8x decimation(not allowed when XDfePrach_CarrierCfg.CCRate==3)</li>
<li>4: 16x decimation(not allowed when XDfePrach_CarrierCfg.CCRate==3 or XDfePrach_CarrierCfg.CCRate==2)</li>
<li>8: 3x decimation</li>
<li>9: 6x decimation</li>
<li>10: 12x decimation(not allowed when XDfePrach_CarrierCfg.CCRate==3)</li>
<li>11: 24x decimation(not allowed when XDfePrach_CarrierCfg.CCRate==3 or XDfePrach_CarrierCfg.CCRate==2) </li>
</ul>

<p>Referenced by <a class="el" href="group___overview.html#ga1287a30b7e83158a48088593234ab1e4">XDfePrach_2CC3RCDynamicTestExample()</a>, <a class="el" href="group___overview.html#ga80c73e89a6fc66abac088bbc45431dc3">XDfePrach_2CC3RCReconfigureTestExample()</a>, and <a class="el" href="group___overview.html#gabd47bf94fdf2e70c66193ba7d36baded">XDfePrach_2CC3RCTestExample()</a>.</p>

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<p>[0-3] The array of [6] Decimation Gains. </p>
<p>Gain is applied to all active Decimation filters. Decimation filters are enabled depending upon the total decimation rate. The total_decimation_rate is the product of the decoded values of DecRate and XDfePrach_CarrierCfg.CCRate. Gain is applied on a per filter basis:</p>
<ul>
<li>Always applies:<ul>
<li>CCDecGain[0]=0: Gain of 0dB in last decimating filter</li>
<li>CCDecGain[0]=1: Gain of 6dB in last decimating filter</li>
<li>CCDecGain[0]=2: Gain of 12dB in last decimating filter</li>
<li>CCDecGain[0]=3: Gain of 18dB in last decimating filter</li>
</ul>
</li>
<li>Only applies if total_decimation_rate = {4, 8, 16, 32, 6, 12, 24, 48, 96)<ul>
<li>CCDecGain[1]=0: Gain of 0dB in fifth decimating filter</li>
<li>CCDecGain[1]=1: Gain of 6dB in fifth decimating filter</li>
</ul>
</li>
<li>Only applies if total_decimation_rate = {8, 16, 32, 12, 24, 48, 96)<ul>
<li>CCDecGain[2]=0: Gain of 0dB in fourth decimating filter</li>
<li>CCDecGain[2]=1: Gain of 6dB in fourth decimating filter</li>
</ul>
</li>
<li>Only applies if total_decimation_rate = {16, 32, 24, 48, 96)<ul>
<li>CCDecGain[3]=0: Gain of 0dB in third decimating filter</li>
<li>CCDecGain[3]=1: Gain of 6dB in third decimating filter</li>
</ul>
</li>
<li>Only applies if total_decimation_rate = {32, 48, 96)<ul>
<li>CCDecGain[4]=0: Gain of 0dB in second decimating filter</li>
<li>CCDecGain[4]=1: Gain of 6dB in second decimating filter</li>
</ul>
</li>
<li>Only applies if total_decimation_rate = {96)<ul>
<li>CCDecGain[5]=0: Gain of 0dB in first decimating filter</li>
<li>CCDecGain[5]=1: Gain of 6dB in first decimating filter </li>
</ul>
</li>
</ul>

<p>Referenced by <a class="el" href="group___overview.html#ga1287a30b7e83158a48088593234ab1e4">XDfePrach_2CC3RCDynamicTestExample()</a>, <a class="el" href="group___overview.html#ga80c73e89a6fc66abac088bbc45431dc3">XDfePrach_2CC3RCReconfigureTestExample()</a>, and <a class="el" href="group___overview.html#gabd47bf94fdf2e70c66193ba7d36baded">XDfePrach_2CC3RCTestExample()</a>.</p>

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<p>[0-4,12-15] SubCarrier spacing of the RACH transmission this DDC is decimating and set by user. </p>
<p>Required to determine phase increment:</p>
<ul>
<li>0: 15KHz spacing</li>
<li>1: 30KHz spacing</li>
<li>2: 60KHz spacing</li>
<li>3: 120KHz spacing</li>
<li>4: 240KHz spacing</li>
<li>12: 1.25KHz spacing</li>
<li>13: 3.75KHz spacing</li>
<li>14: 5KHz spacing</li>
<li>15: 7.5KHz spacing </li>
</ul>

<p>Referenced by <a class="el" href="group___overview.html#ga1287a30b7e83158a48088593234ab1e4">XDfePrach_2CC3RCDynamicTestExample()</a>, <a class="el" href="group___overview.html#ga80c73e89a6fc66abac088bbc45431dc3">XDfePrach_2CC3RCReconfigureTestExample()</a>, and <a class="el" href="group___overview.html#gabd47bf94fdf2e70c66193ba7d36baded">XDfePrach_2CC3RCTestExample()</a>.</p>

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